TY - JOUR AU - Carvalho-Peixoto, Jacqueline A2 - Carvalho-Peixoto, Jacqueline A2 - Alves, Robson Cardilo A2 - Cameron, Luiz-Cláudio DB - BISp DP - BISp KW - Ammoniak KW - Ausdauerbelastung KW - Ermüdung KW - Ernährung KW - Glutamin KW - Kohlenhydratzufuhr KW - Langstreckenlauf KW - Leistungsbeeinflussung KW - Leistungsphysiologie KW - Sportmedizin LA - eng TI - Glutamine and carbohydrate supplements reduce ammonemia increase during endurance field exercise TT - Glutamin- und Kohlenhydratergänzungspräparate reduzieren die Zunahme der Blut-Ammoniakkonzentration während Ausdauerbelastungen PY - 2007 N2 - Blood ammonia concentration increases during endurance exercise and has been proposed as a cause for both peripheral and central fatigue. We examined the impact of glutamine and (or) carbohydrate supplementation on ammonemia in high-level runners. Fifteen men in pre-competitive training ran 120 min (~34 km) outdoors on 4 occasions. On the first day, the 15 athletes ran without the use of supplements and blood samples were taken every 30 min. After that, each day for 4 d before the next 3 exercise trials, we supplemented the athletes’ normal diets in bolus with carbohydrate (1 g•kg–1•d–1), glutamine (70 mg•kg–1•d–1), or a combination of both in a double-blind study. Blood ammonia level was determined before the run and every 30 min during the run. During the control trial ammonia increased progressively to approximately 70% above rest concentration. Following supplementation, independent of treatment, ammonia was not different (p > 0.05) for the first 60 min, but for the second hour it was lower than in the control (p < 0.05). Supplementation in high-level, endurance athletes reduced the accumulation of blood ammonia during prolonged, strenuous exercise in a field situation. L2 - https://dx.doi.org/10.1139/H07-091 DO - 10.1139/H07-091 SP - S. 1186-1190 SN - 1715-5312 JO - Applied physiology, nutrition, and metabolism IS - 6 VL - 32 M3 - Elektronische Ressource (online) M3 - Gedruckte Ressource ID - PU201802000948 ER -